Sapphire Boat Descriptions
Sapphire is a transparent single crystal alumina material, which has excellent chemical stability and excellent mechanical, thermal and optical properties. As raw materials, its performance is much better than glass, quartz and other mass-produced transparent materials.
Sapphire Boat Specifications
|
Item
|
Unit
|
Typical Values
|
|
Crystal Structure
|
-
|
Hexagonal
|
|
Density
|
g/cm3
|
3.97
|
|
Physical Properties
|
|
Poisson's Ratio
|
-
|
0.18～0.29
|
|
Vickers Hardness
|
Gpa
|
22.5
|
|
Young's Modulus
|
Gpa
|
470
|
|
Flexural Strength
|
MPa
|
690
|
|
Tensile Strength
|
Mpa
|
2250
|
|
Compressive Strength
|
MPa
|
2940
|
|
The Thermodynamic Property
|
|
Melting Point
|
ºC
|
2053
|
|
Thermal Conductivity at 20℃
|
W/m•k
|
42
|
|
CLTE 40-400℃
|
10-6/℃
|
7.0
|
|
Specific Heat Capacity
|
J/(g・K)
|
0.75
|
|
Electrical Property
|
|
Dielectric Strength
|
MV/m
|
48
|
|
Dielectric Constant at 20℃
|
MHz
|
9.3
|
|
Dielectric Loss at 20℃
|
MHz
|
<1.4x10-4
|
|
Volume Resistivity at 20℃
|
Ω•cm
|
>1.0x1014
|
|
Volume Resistivity at 500℃
|
Ω•cm
|
1.0x1011
|
|
Index of Reflection
|
|
589nm
|
No=1.768
|
Ne=1.760
|
Sapphire Boat Features
-Heat Resistance
-Plasma Resistance
-Low Dielectric Loss
Sapphire Boat Applications
- Tools
Sapphire Boat Packaging
SAM’s Sapphire Boat is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.
Sapphire Boat FAQs
Q1: What is a Sapphire Boat?
A sapphire boat is a container made from synthetic sapphire (aluminum oxide, Al₂O₃) used to hold materials during high-temperature processes. Its shape resembles a small tray or boat, designed to withstand extreme temperatures and harsh chemical environments.
Q2: How should Sapphire Boats be cleaned and maintained?
Cleaning: Clean with non-abrasive cleaners and solvents compatible with sapphire. Ultrasonic cleaning can be used for thorough cleaning.
Maintenance: Regularly inspect for signs of wear or contamination. Store in a clean, dry environment to prevent dust and other contaminants.
Handling: Handle with care to avoid mechanical damage. Use gloves to prevent fingerprints and other contaminants.
Q3: What precautions should be taken when using Sapphire Boats?
Handling: Handle with care to avoid dropping or impacting the boats, as sapphire, while strong, can still be brittle and may crack under mechanical stress.
Temperature Changes: Avoid rapid temperature changes to prevent thermal shock, which can cause cracking.
